| Feng Yingsheng, an associate professor at the Department of Chemistry of the University of Hong Kong, pointed out that helium is a rare metal that is expensive and is a toxic metal. 钌 generally does not exist independently and will form a different
compound from other elements, and the compound is soluble in water or an organic solvent and becomes a liquid. He continued to point out that cockroaches have little effect and are mostly used for synthetic or experimental reagents. They are not explosive and are
therefore unlikely to be used as bombs. |
